Lathe center



W. R. FISHER LATHE CENTER Jan. 13-, 1931.

Filed Aug. 6, 1926 INVENTOR. M17040; Fir

ATTORNE ings and projecting inwardly of work'engaging center 19 to the fulcrum and preferred form of structure, I do not wish to limit myself to the preciseformof structure shown, but desire to avail myself of such Variations and' nodifications as may come within the scope of theappended claims;

Having thus described my invention what I claim as new and desire to secure by Letters Patent is: r

"1. 1A lathe center of the class described comprising a shank; a reduced portion on I sai" shank; a further reducedportion projecting centrally outwardly from. said reduced portion; a cupshaped head; a work engaging center projecting outwardly centrally from'sa1dhead,sa1d Work engaging center-being hollow; a bearing ring fixedly mounted on said further reduced portion; ballbearmgs engagln'g the periphery OfSZLlCl bearing ring; a retainingring for retain ing said'ballbearings on said-bearing ring, said head being positioned over and engaging snugly the periphery of said retaining ring; a cup shaped bearing head 'mounted in said first mentioned head and embracing the end of said'further reduced portion,'the

; base of said bearing head being recessed substantiallysemi-spherically on :its outer surface; a layer of ball hearings in said recess;

and a larger bearing engaging said ball bearsaid work engaging center point.

2. A lathe center of the class described comprising a shank; a head; a work engaging center'on said head; means for retaining I saidhead on said shank and permitting said head and said work engaging center to rock 011 a point within said work engagingicenter relatively to said shank.

3. A lathe center of the class described comprising a shank; a headymeans for mounting said head rotatably on said shank and oscillatory relatively thereto transversely of the longitudinal axis of said shank; a work engaging center on said head, the point of oscillation of said head and said work engaging center being adjacent the forward end of said head.

4:. Alathe center of the class described comprising a shank; a head rotatably mounted on said shank; a work engaging center on saidhead, said head and said work engaging center being rockable transversely of the longitudinal axis of said shank ;I.and a curvilinearly surfacedbearing member for supporting said head and permitting said oscillation.

5. A lathe center of the class. described, comprising: a shank; a head rotatably mounted on said shank and embracing one the reception of a plurality of balls and an enlarged ball bearing engaging said balls and theinner surface of said work engaging center.

6. A lathe center of the class described, 7

comprising: a shank; a' head 'rotatably :riiountedon said shank and embracing one 7 end thereof; a work engaging center project ing outwardly from; one side of said head a hall retainer -mounted within said head and ha a recess formed-therein for the reception of a plurality ofballs; andan enlarged hall hearing-en gaging said balls-andthe inher surface of said work engaging center, 7

said head and said work engaging center being rockable in unison within predetermined limit-s on said enlarged ball as =aifulcrum.

7. A lathe center of gthe class described comprising: a shank; a hollow head rotatably mounted on the forward end ofsaid W; REUEN insane v I 

